PinnedCracking the 4Sum Challenge in Rust: A Guide from Brute Force to O(n^2)We've all been there. You tackle Two-Sum and feel like a coding genius. You conquer Three-Sum and elevate to "logic wizard" status. Then, lurking in the shadows, comes 4Sum. Suddenly, you're staring at the prospect of four nested loops, your brain sc...Jan 2, 2026
Maximal Rectangle in rustThe Challenge link :https://leetcode.com/problems/maximal-rectangle Given a binary matrix, we need to find the largest area of a rectangle consisting only of 1s. Example Matrix: 1 0 1 0 0 1 0 1 1 1 1 1 1 1 1 1 0 0 1 0 In this case, the maximal recta...Jan 11, 2026
Minimum ASCII Delete Sum for Two Strings in RustWhen we are asked to make two strings equal by deleting characters, our first instinct might be to find the Longest Common Subsequence (LCS). This problem is almost exactly that, but with a twist: instead of counting the number of characters, we are ...Jan 10, 2026
Finding the Smallest Subtree Containing All Deepest NodesWhen working with binary trees, we often need to identify specific nodes based on their depth. A classic challenge is finding the smallest subtree that contains every single deepest node in the tree. In this post, we’ll break down the logic, visualiz...Jan 9, 2026
Mastering Subsequence Alignment: Max Dot Product of Two SubsequencesWhen you first encounter the Max Dot Product of Two Subsequences problem on LeetCode, it might look like a variation of the Longest Common Subsequence (LCS). However, the inclusion of negative numbers and the requirement for a non-empty result adds a...Jan 8, 2026
Maximizing the Split: Solving the Maximum Product of Splitted Binary TreeIf you are preparing for technical interviews, you’ve likely encountered binary tree problems that require more than just a simple traversal. The Maximum Product of Splitted Binary Tree is a classic problem that tests your ability to handle tree recu...Jan 7, 2026
Swapping Nodes in Pairs: A Rust Adventure with Linked ListsLinked list problems are a rite of passage for any programmer. They're fundamental, test your understanding of pointers , and often unveil elegant solutions. Today, we're tackling a classic: Swap Nodes in Pairs. The problem statement is simple: given...Jan 6, 2026
